iBasso AMP17 Review

 

Introduction:

iBasso is a notable brand in the portable audio sector, known for its Digital Audio Players, modular amplifier cards, DACs, IEMs, and headphones. The AMP17 is a solid-state amplifier module developed for the iBasso DX300, DX320, and DX340 DAPs. This module is the first portable amplifier card to utilize Gallium Nitride (GaN) Field-Effect Transistors (FETs). The use of GaN FETs is intended to provide advantages such as high-speed switching, reduced conduction loss, and improved transient response.

This review provides a detailed, objective, and comprehensive analysis of the AMP17’s design, verified technical specifications, sound performance, and its position within iBasso’s amplifier lineup, based on official specifications and aggregated insights from professional reviews.

 

Disclaimer:

I would like to thank iBasso for providing the AMP17 AMP Module as a review sample. I am not affiliated with iBasso beyond this review, and the opinions expressed here are my true and unaltered impressions of the product.

 

Price & Availability:

The iBasso AMP17 is a premium-tier amplifier module and is priced at $299.00 USD. For the most accurate pricing and availability, please visit the official iBasso website or authorized retailers.

• iBasso AMP17 Amplifier Module

  

Package and Accessories:

The AMP17 arrives in a robust, compact metal box that features protective foam layers, ensuring the sensitive module is secure during transit. The unboxing experience is straightforward and professional.

Inside the box are the following items.

• 1 x iBasso AMP17 Amplifier Module
• 1 x Screwdriver
• 6 x Screws
• 1 x Warranty Card

The dedicated screwdriver and antistatic bag highlight iBasso’s focus on user convenience and component safety during installation.

 

Design & Features:

The AMP17 is a solid-state, Class AB amplifier module designed for seamless integration with the iBasso DX300, DX320, and DX340 DAPs. Its front plate, crafted from brushed aluminum, offers both durability and a premium aesthetic. At the core of the module’s innovation is the use of Gallium Nitride (GaN) Field-Effect Transistors (FETs) in conjunction with precision discrete transistors.

GaN transistors represent a significant technological leap in audio amplification. Their electron mobility, which can be as high as 2,000 cm²/V·s, is substantially superior to that of traditional silicon-based transistors. This enhanced mobility results in several key performance benefits.

The AMP17 module is equipped with two 4.4mm balanced output ports. One serves as a dedicated headphone output (PO), while the other functions as a line-out (LO). The line-out feature is particularly useful, as it allows the DAP to be used as a high-quality source for an external amplifier, thereby enhancing the overall versatility of the system.

Additionally, the module supports a super-gain mode when connected to a 12V DC external power supply. This mode unlocks a higher output power, making the module suitable for driving more demanding headphones. This super-gain feature is exclusive to the DX340 model, though the AMP17 is fully compatible with the entire DX300 series. The module’s logic and interface are identical to those of the stock amplifier modules, ensuring a smooth and user-friendly experience.

Other notable features include a high-current, low-impedance output and a GaN-driven ripple suppression system, both of which are designed to ensure signal purity and stability.

 

Technical Specifications: 

4.4mm Balanced PO Output (Headphone)

• THD+N: -116dB (no load) / -110dB (600Ω load)
• Dynamic Range: 120dB
• SNR: 122dB
• Crosstalk: -117dB
• Frequency Response: 10Hz–40kHz (±0.5dB)
• Output Impedance: 1.1Ω
• Output Power (Battery): 1030mW + 1030mW @ 32Ω
• Output Power (12V DC): 1900mW + 1900mW @ 32Ω 

4.4mm Balanced LO Output (Line-out)

• THD+N: -116dB (no load)
• Dynamic Range: 126dB
• SNR: 123dB
• Crosstalk: -97dB
• Output Levels: 1.6Vrms (Low), 2.6Vrms (Mid), 3.0Vrms (High Gain)

 

Amplification & Background Noise:

The AMP17 amplifier module is designed to provide a clean and powerful signal, featuring an output impedance of 1.1Ω. This low impedance aims to ensure compatibility with both sensitive in-ear monitors (IEMs) and high-impedance headphones.

The use of GaN transistors, with their high electron mobility and zero-crossing control, is intended to result in a near-zero noise floor. This characteristic makes the module potentially well-suited for sensitive IEMs. The high-current output is designed to drive demanding headphones with control and clarity, even during complex musical passages.

When used with the DX340 and a 12V DC power input, the super-gain mode is available, which provides up to 1900mW per channel into a 32Ω load. This feature is intended to offer additional power for headphones that require more output. The module’s efficiency allows for higher sound pressure levels at lower volume settings. The GaN-driven ripple suppression system is included to maintain signal purity, which is beneficial for intricate music and when using sensitive IEMs. In fact, there was just a very low amount of noise with very sensitive IEMs, such as the Campfire Audio Fathom, even when the Wi-Fi connection was active.

 

 

Equipment’s used for this review:

• DAP’s             : iBasso DX360
• AMP Card’s   : AMP17, AMP16, AMP15
• IEM’s              : iBasso IT07, Campfire Audio Fathom
• Headphones  : iBasso SR3, SIVGA P2 Pro 

 

Albums & tracks used for this review:

• Norah Jones – Come Away With Me (Apple Music Lossless)
• Adele – My Little Love (Apple Music Lossless)
• Sarah McLachlan – Angel (Flac 24bit/48kHz)
• Sertap Erener – Aşk (Flac 16bit/44.1kHz)
• Edith Piaf – Non Je Ne Regrette Rien (Flac 16bit/44.1kHz)
• Diana Krall – So Wonderful (DSF)
• Aretha Franklin – I Say A Little Payer (Flac 24bit/96kHz)
• Michael Jackson – Billie Jean (Flac 24bit/96kHz)
• George Michael – Don’t Let the Sun Go Down on Me (Flac 24bit/192kHz)
• David Bowie – Heroes (Flac 24bit/192kHz)
• Elton John – Rocket Man ((Flac 24bit/96kHz)
• Barry White – Just The Way You Are (Flac 24bit/48kHz)
• Isaac Hayes – Walk On By (Flac 16bit/44.1kHz)
• Sting – Englishman in New York – (Flac 24bit/48kHz)
• Eric Clapton – Wonderful Tonight (Flac 24bit/96kHz)
• Dave Gahan – Kingdom (Tidal Hi-Fi)
• Radiohead – Live in Berlin “Album” (Apple Music Lossless)
• Radiohead – Pyramid Song (Apple Music Lossless)
• U2 – Sunday Bloody Sunday (Flac 16bit/44.1kHz)
• Muse – Hysteria (Flac 24bit/96kHz)
• Red Hot Chili Peppers – Nobody Weird Like Me (Flac 24bit/48kHz)
• Michael Jackson – Billie Jean (Flac 24bit/96kHz)
• Bear McCreary’s – Valkyries (Deezer HiFi)
• Bro Safari, UFO! – Drama (Deezer HiFi)
• Armin Van Buuren – Vini Vici (Flac 16bit/44.1kHz)
• Daft Punk – Instant Crush (Flac 24bit/96kHz)
• Daft Punk – Doin’ it Right (Flac 24bit/96kHz)
• Lorde – Royals (Flac 24bit/48kHz)
• Massive Attack – Angel (Flac 24bit/48kHz)
• Toutant – Rebirth (Deezer HiFi)
• Gogo Penguin – Raven (Flac 24bit/192kHz)
• Gogo Penguin – Murmuration (Flac 24bit/192kHz)
• Portishead – It Could Be Sweet (Apple Music Lossless)
• Hans Zimmer – The Dark Knight OST (Flac 24bit/96kHz)
• Max Richter – On the Nature of Daylight (Flac 24bit/96kHz)
• Charly Antolini – Duwadjuwandadu (Flac 24bit/192kHz)
• Tchaikovsky – Symphony No. 5 (Flac 16bit/44.1kHz)
• Ferit Odman – Look, Stop & Listen (Flac 24bit/192kHz)
• Chopin – Nocturn No. 20 In C-Sharp Minor (Flac 16bit/44.1kHz)
• Clair de Lune – Claude Debussy (Spotify)
• Fazıl Say – Nazım Oratoryosu (Live) (Flac 16bit/44.1kHz)
• Vivaldi – Le QuarttroStagioni “The Four Season” (Apple Music Lossless)
• Pink Floyd – Shine On You Crazy Diamond (Apple Music Lossless)
• Miles Davis – So What (Deezer HiFi)
• Otto Liebert& Luna Negra – The River (Flac 24bit/192kHz)
• Lunatic Soul – The Passage (Flac 16bit/44.1kHz)
• Deftones – My Own Summer (Shove it) (Flac 16bit/44.1kHz)
• Metallica – Dyers Eve (Flac 24bit/96kHz)
• Metallica – Sad but True (Flac 24bit/96kHz)
• Opeth – Windowpane (Flac 16bit/44.1kHz)
• Megadeth – Sweating Bullets (Tidal Hi-Fi)
• Rush’s – Tom Sawyer (Flac 16bit/44.1kHz)
• Slayer – Angel of Death (Spotify)
• Liquid Tension Experiment 2 – Acid Rain (Spotify)
• Yosi Horikawa – Bubbles (Spotify)

 

The Sound:

The AMP17, when paired with the iBasso DX340 DAP, is noted for a balanced sound signature that combines technical precision with musical engagement. The GaN transistors’ features, such as fast switching, reduced Miller capacitance, and zero-crossing control, are intended to minimize distortion and ripple interference. This aims to result in a transparent, dynamic, and detailed audio experience with an analog-like quality.

The module’s versatility was assessed using the iBasso IT07 and Campfire Audio Fathom IEMs. The AMP17 adapted to the sonic characteristics of each IEM and was observed to perform well across various music genres, from complex jazz to bass-heavy electronic music.

These impressions were formed after a burn-in period of over 120 hours, utilizing IEMs including the iBasso IT07 and Campfire Audio Fathom and headphones like the SR3 and SIVGA P2 Pro, in combination with the iBasso DX340 and AMP17 AMP module.

iBasso DX340 + AMP17 Combination (Lows / Mids / Highs / Soundstage & Imaging):

The AMP17 amplifier module produces a bass response that is tight, controlled, and impactful, with deep extension and no excessive warmth or bloom. The GaN transistors’ speed and precision enable clear bass reproduction, delivering visceral impact for kick drums and articulate basslines. When used with the iBasso IT07, which has a warm and full-bodied sound, the AMP17 enhances the low-end texture, providing a punchy yet controlled bass response. This pairing produces rhythmic, pulsating basslines with clear separation from the midrange, making it suitable for genres like hip-hop and electronic music where a strong, defined bass is essential. In contrast, with the Campfire Audio Fathom, known for its more neutral and detailed sound, the AMP17 delivers deep, authoritative bass without bloating. When playing orchestral music, this combination reveals a powerful yet nuanced low end, with bass notes resonating with depth and precision, which is ideal for cinematic and classical genres. The iBasso SR3 headphones also benefit from the AMP17’s performance, as the module provides a powerful and well-defined bass that remains integrated with the overall sound.

The midrange is transparent, natural, and free from coloration, presenting vocals and instruments with clarity and realism. The low distortion and high resolution, which are enhanced by GaN ripple suppression, reveal subtle nuances, such as the texture of a vocalist’s voice or the resonance of acoustic instruments. When paired with the iBasso IT07, the AMP17 accentuates the IEM’s lush midrange, delivering emotionally engaging vocals. In jazz music, for example, the IT07’s lush vocal presentation is enhanced by the AMP17, which preserves every breath and inflection with lifelike clarity. The Campfire Audio Fathom, with its more analytical midrange, benefits from the AMP17’s precision, offering a more clinical yet detailed presentation. When listening to rock music, this pairing reveals intricate guitar textures and emotive vocals with remarkable separation and detail. With the iBasso SR3, the AMP17 maintains the natural tonality of the midrange, ensuring that vocals and acoustic instruments are rendered with authenticity. The SIVGA P2 Pro also pairs well, providing a clean and articulate sound that complements its midrange presentation.

The treble is crisp, extended, and airy. The GaN transistors minimize ripple interference for a clean and detailed high end. The rapid switching of the transistors ensures precise treble reproduction, capturing micro-details like cymbal decays and string harmonics without harshness or fatigue. The highs maintain a natural, analog-like quality, which enhances genres like classical and live recordings. With the iBasso IT07, the AMP17 complements the IEM’s smooth and slightly warm treble, ensuring a fatigue-free listening experience. In classical music, this pairing renders delicate violin harmonics with sparkle and air. The Campfire Audio Fathom, with its more analytical treble, pairs exceptionally well with the AMP17’s precision. When playing progressive rock, the Fathom highlights crisp cymbal hits and atmospheric effects with exceptional clarity. The SIVGA P2 Pro also benefits, as the AMP17 enhances its treble region, providing a detailed and extended high-frequency response.

The AMP17 produces a wide, deep, and three-dimensional soundstage, which is enhanced by the module’s precision. The imaging is pinpoint, with instruments and vocals occupying distinct positions within the soundscape, offering a realistic sense of depth and height. When paired with the iBasso IT07, the AMP17 enhances the IEM’s moderately wide soundstage, creating an immersive experience. In jazz music, this pairing places instruments in distinct spatial positions, with the AMP17’s holographic soundstage adding depth to the ensemble. The Campfire Audio Fathom, known for its precise imaging, benefits from the AMP17’s ability to create a layered and expansive soundscape.

 

Comparison with Other iBasso Amplifier Modules:

The AMP17, AMP15, and AMP16 cater to different audiophile preferences, each with distinct technological approaches and sound signatures.

Below is a detailed comparison:

Feature/Characteristic	iBasso AMP17	iBasso AMP15	iBasso AMP16
Overall Sound Signature	Transparent, dynamic, and balanced. Combines technical precision with musicality.	Clean, neutral, and analytical. Prioritizes accuracy and resolution.	Warm and engaging in Tube Mode; analytical in Class AB mode.
Key Technology	Class AB with GaN FETs for fast transients, low distortion, ripple suppression, and zero-crossing control.	Class A with discrete components for reference-grade clarity.	Hybrid tube/solid-state with Raytheon JAN6418 tubes for warmth in Tube Mode; solid-state in Class AB mode.
Lows (Bass)	Tight, powerful, and controlled with deep extension and fast transients.	Precise and linear with excellent texture but less impactful.	Warm, thick, and punchy in Tube Mode; less controlled than AMP17 in Class AB mode.
Mids (Midrange)	Natural, transparent, and emotionally engaging with high clarity.	Detailed and accurate but can feel clinical.	Warm and intimate in Tube Mode; detailed but less warm in Class AB mode.
Highs (Treble)	Clear, extended, and refined with precise detail and no harshness.	Crisp and highly detailed but can be unforgiving with poor recordings.	Smooth and gentle in Tube Mode; lively but less refined in Class AB mode.
Soundstage & Imaging	Expansive, holographic, and layered with precise imaging.	Wide but less deep and immersive; accurate imaging.	Intimate and warm in Tube Mode; wider but less layered in Class AB mode.
Standout Feature	GaN technology, high-current output, dedicated 4.4mm line-out, super-gain mode (DX340 only).	Reference-grade clarity for critical listening.	Switchable tube/solid-state modes for versatility.

 

AMP17 versus AMP15:

The AMP15, a Class A amplifier, delivers a clean, neutral, and highly resolving sound ideal for critical listening. The AMP17 surpasses it with extra level of dynamics, faster transients, and a more engaging presentation, thanks to GaN transistors’ ripple suppression and zero-crossing control. The AMP17’s bass is tighter and more impactful, its treble is more articulate, and its soundstage is relative deeper and holographic, making it a more refined and versatile option.

 

AMP17 versus AMP16:

The AMP16 is a hybrid amplifier with a dual-mode design, offering a warm, euphonic sound in Tube Mode (using Raytheon JAN6418 tubes) and a more analytical sound in Class AB mode. The AMP17, a pure solid-state Class AB amplifier, leverages GaN transistors for a transparent, detailed, and dynamic sound without tube-like warmth or coloration. The AMP17 delivers tighter bass, a more neutral midrange, and crisper treble compared to the AMP16’s Tube Mode, with a significantly wider and more three-dimensional soundstage. While the AMP16 appeals to listeners who enjoy a tube-like sound, the AMP17 is ideal for those prioritizing technical precision, clarity, and an expansive soundstage.

 

Conclusion:

The iBasso AMP17 is an excellent sounding portable amplifier module created for the DX300 Series, leveraging GaN transistor technology to deliver a transparent, dynamic, and highly resolving sound. Its low distortion, high-current output, and expansive soundstage make it a top-tier choice for audiophiles. The dedicated 4.4mm line-out and super-gain mode (DX340 only) enhance versatility, while compatibility with sensitive IEMs and demanding headphones ensures broad applicability. The premium price and DX340-exclusive super-gain mode may limit its appeal, but the AMP17’s performance justifies its cost for dedicated audiophiles. It sets a new standard for portable amplifier modules within iBasso’s ecosystem, offering a compelling upgrade for DX300 series users.

 

Pros & Cons:

• + GaN transistor technology for fast transients, low distortion, ripple suppression, and zero-crossing control.
• + Transparent, dynamic, and natural sound signature.
• + High-current, low-impedance output for driving a wide range of headphones.
• + Expansive, holographic soundstage with precise imaging.
• + Dual 4.4mm balanced outputs (headphone and line-out) for versatility.
• + Build quality with durable materials.
• + Backward compatibility with the entire DX300 Series (DX300, DX320, DX340)

• – Super-gain mode (via 12V DC input) is exclusive to the DX340.
• – A very low level of noise was audible when listening to sensitive IEMs with the Wi-Fi activated.

 

Thank you for the Read!